Need to know origin of first names of Walter Max Ulyate Sisulu , South Africa ,

Question:

Need to know origin of first names of Walter Max Ulyate Sisulu , South Africa , ANC,specifically Ulyate?

Best Answer - Chosen by Asker: Walter Sisulu,
Though marriage across the colour line was outlawed, it was little deterrent to those with soul aspirations. Perhaps the most well-known and most ironic product of such unions was ANC stalwart and pragmatic long-time adviser and friend of Nelson Mandela throughout his exile on Robben Island, Walter Sisulu, born in 1912 in Qutubeni, Transkei.

Though he had little to do with him, Sisulu's white father, Albert Dickinson, a Port Elizabeth government worker, went on to have another child by his mother, Alice. They never officially married, and Walter took on his mother's surname, adding Max Ulyate as his middle names. Though it has not been explored, the name Ulyate was a surname of a prominent family of 1820 settlers.

There is a book published, 'Daughter of Yesterday - A Pioneer Child Looks Back at Early Johannesburg' by Ralls A. M. & Gordon R. E, that describes the arrival of the Ulyate family.

After some searching...I've found that the Ulyaye family who settled in SA in the 1820s were originally from London ( however it's not a British name I'm familiar with!)...
Henry Ulyate, the father, was a tanner, the son of William and Sarah Ulyate. He was baptised in London at St Andrew's Church, Holborn, on 25 December 1780.

It was Henry who went to South Africa.